[NV98] On recent Linux kernel (3.13 and 3.14), the GPU locks up around the time an X server starts
Submitted by Johannes Kloos
Assigned to Nouveau Project
Description
Created attachment 97525
dmesg output, as of running Linux 3.14
On my laptop, the GPU reproducably locks up when booting Linux 3.13 or 3.14.
Hardware set-up:
- NV98; lspci gives
VGA compatible controller: NVIDIA Corporation G98M [Quadro NVS 160M] (rev a1)
- Dual-head set-up. One connected monitor is the laptop screen, the other
is an HDMI monitor.
- x86-64 system (Dell Latitude E6400)
Software:
* The attached dmesg is from running Linux 3.14.1, as downloaded from
kernel.org. I have applied a small patch as suggested by
RSpliet and xexaxo^ on IRC.
* libdrm: Installed from Debian unstable, package version: libdrm-nouveau2 2.4.52-1
* Xorg: Also from Debian unstable, package version: 1:7.7+1 (i.e., Xorg 7.7).
Error description: During boot-up, an X server seems to start up. The
X server process is running, and the system switches to a fresh VT, but
it seems that graphics are not initialized at all, and the X server is stuck.
In particular, nothing remotely resembling a gdm session shows up, and the
keyboard is not responsive (except Magic Sysrq).
When switching to a console, a kernel message about a GPU lockup (see dmesg)
appears.
Furthermore, booting the system with an old kernel (verified for Linux 3.2.42,
using an old Debian package), X starts up normally.
Attached: dmesg output. I will add further information in additional messages.
**Attachment 97525**, "dmesg output, as of running Linux 3.14":
dmesg2.txt